Closure fastener



Feb.A 11, 1930. H, J, L FRANK 1,746,307

` cLosURE FASTENER Filed April 29, 1927 l MJ A TTORNE Y Patented Feb.11, 1930 PATENT oFFicE HARRISON J'. L. FRANK, OF DETROIT, MICHIGANCLOSURE FASTENER Application led April 2B, 1927. Serial No. 187,529.

The present invention relates to closure fasteners and particularly todevices of the sort especially suitable for the doors of fuse cabinetsused in electric wiring sytems.

5 Among the objects of the invention is a fastener that is cheap,durable and effective.

Another object is a fastener that is quickly and easily assembled andadjusted, and which will maintain the door securely closed but willoffer little difficulty in opening.

Still other objects will readily appear to those skilled in the art uponreference to the following description and accompanying drawings inwhich Fig. 1 is a front elevation of a fuse cabinet provided with thefastener;

Fig. 2 is a horizontal section therethrough. The cabinet comprises ametal box 10 mounted in any suitable fashion but pref- 20 erably so thatthe cover member l1 is flush with or lies with its edges fiat upon awall surface (not shown). Within said boX is mounted an insulating block12 providing suitable mountings for the fuses 13. l

The cover member consists of a metal' plate provided with a centraldepressed portlon in which is an opening 15 through which project thefuses 13, the depressed portion around the opening 15 forming adepending flange 16. 53 Near the plate surface, flange 16 is formed witha shoulder 17 and this shoulder is below the plate surface a distanceequal to the thickness of ldoor 18 hinged to the plate as at 19 and ofsuchsize and shape as to lie, when closed, upon said shoulder and flushwith the outer surface of the plate as shown in Fig. 2. Opposite thehinges 19, it is preferred to punch up a tongue 2O to eoact with thedoor fastener to be described.

Near the edge of door 18 opposite hinges 19 a small rectangular opening25 is provided and through this extends a loop 26 of a short strap ofmetal 27. One end 28 of the strap 27 is bent back against the innersurface of the door 18 and riveted as shown or Welded or secured in anysuitable fashion. The other end 29 of the strap is bent outwardly at asmall angle then bent back to form a hump or projection 30. This hump isprovided with sloping sides as shown and so located as to strike tonguewhen the door is being closed and besprung back thereby, springing outbelow the tongue when the door has reached fully closed position asinFig. 2. Strap 27 is preferably of springsteel so that it will yield asmentioned to permit closing or opening the door but, in closed position,will press tightly against the tongue 20 with the hump 30 below thetongue and, thereby maintain the door closed.

An operating handle is preferably secured to the door 18 and this ispreferred to be in the form of a ring passing through loop 18.

The closure fastener forming the subject matter of this application isshown and described but not claimed in application for Patent Serial No.49,709 filed Aug. 12, 1925 by the present ap licant.

Having now escribed the invention and the preferred form of embodimentthereof it is to be understood that the said invention is to be limited,not to the specific details herein set forth but only by the scope ofthe claims which follow.

1. In a closure fastener for doors, comprising a Spring metal stripformed with a loop intermediate its ends, said loop projecting throughsaid door and having a handle secured thereto, meansfor securing one endof said strip to the inner surface of said door, the other end `of saidstrip being free land provided with a hump or projection, and a l tonguein the openingfor said door adapted to project into the path of saidhump or projection when said door is being moved to offer Aresistance tosaid movement, sai-d free end carrying said hump being flexible topermit passing said tongue.

2. A door fastener combining a flexible metalstrip having one end scuredto the inner surface of said door and its intermediate portion formedinto a loop extending through said door to furnish means whereby ahandle may be secured, the other end being formed to provi-de aprojection with sloping sides which engage a projection of the dooropening, said projections being so located as to offer resistance to themovement 'of said door from an entirely closed position.

3. A door fastener combining a flexible metal strip having one endsecured to the inner surface of said door and its intermediate portionformed into a loop extending through said door and a handle engaged insaid loop, the other end being formed to provide a projection withsloping sides which engage a projection of the door opening, saidprojections being so located as to oier resistance to the movement ofthe dooi` from an entirely closed position.

4. A door fastener combining a flexible metal strip having one endsecured to the inner surface of said door and its intermediate portionformed into a loop extending through a slot in said door and a handleengaged in said loop preventing the inward movement of the loop throughsaid opening in door, the other end being formed to provide a projectionWith sloping sides which engage a projection of the door opening,'saidprojections being so located as to oier resistance to the movement ofthe door from an entirely closed position.

HARRISON J. L. FRANK.

